Hiccup is a young Viking who unfortunately has not inherited his warrior father's physical stature and intensity.
While everyone else his age wants to learn to slay dragons, young Hiccup thinks there may be more peaceful solutions to dealing with their sworn enemies.
"Dragon's" directors drew on their actor to help define his animated alter ego.
"Everything about Hiccup is mined from Jay," said director Dean DeBlois. "He has that physical awkwardness, but sharp wit and intelligence and appeal.
Jay admits he does see some of himself in Hiccup.
"Yeah I do, 100 percent. I've always been kind of a weird one, march to the beat of my own drum," said Jay. "I was always the kid who stayed indoors writing, drawing, reading and watching TV. Then as I got older I realized all those things I was embarrassed about when I was younger are things I'm really proud of. That is what Hiccup's story is to me."
Jay has one more movie out this summer. He co-stars with Nicolas Cage in "The Sorcerer's Apprentice." That hits theaters in July.